In Republic 1, Thrasymachus makes the radical claim that being just is ‘high-minded simplicity’ and being unjust is ‘good judgment’ (348c–e). Because injustice involves benefiting oneself, while justice involves benefiting others, the unjust are wise and good and the just are foolish and bad (348d–e). The “greedy craftsperson” argument (1.349b–350c) attempts to show that the unjust person's desire to outdo or have more than ( pleon echein) everyone is a symptom of her ignorance. Many commentaries have found the argument problematic (...) and unclear. However, this paper argues that the greedy craftsperson argument defends plausible constraints on the nature of justice and wisdom. (shrink)

At Euthydemus 278–282, Socrates produces an argument that has almost universally been agreed to entail that wisdom is sufficient for happiness, necessary for happiness, or both. According to these standard readings, this is because Socrates ties wisdom to correct use of one's assets. Since wisdom is necessary or sufficient for correct use and correct use is necessary or sufficient for happiness, wisdom bears the same relation(s) to happiness, mutatis mutandis. I propose a split-level reading of this passage. On the level (...) of natures, Socrates aims to establish that a causal-explanatory relation holds between the nature of wisdom and correctness such that wisdom by nature always produces correctness; ignorance, conversely, by nature never produces correctness. However, on the level of individuals, the causal relations are defeasible such that the wise sometimes fail and the ignorant sometimes succeed. Thus this reading does not entail that having wisdom is necessary or sufficient for correct use or for happiness. If this split-level reading is correct, then this passage, the locus classicus for the necessity and sufficiency theses, fails to establish either. (shrink)

A discussão entre Trasímaco e Sócrates no Livro I da República de Platão dá vigor à questão da justiça iniciada com Céfalo. Trasímaco é um personagem importante da obra, pois vai relacionar a justiça ao governo da cidade. Isso faz com que a justiça saia da esfera individual e entre na esfera pública. Em nosso artigo, pretendemos verificar as teses de Trasímaco sobre a justiça e se estas são consistentes entre si. O problema da consistência das teses é antigo entre (...) os comentadores e apresenta diferentes soluções. Nosso intuito é propor uma solução para o problema e relacionar isto à arte do governo proposta por Trasímaco. Isso nos permite verificar a maneira pela qual Sócrates e Trasímaco diferem entre si em suas propostas de governo e dos tipos de governante. Desse modo, nosso trabalho pretende contribuir com a literatura platonista sobre o papel ocupado por Trasímaco dentro da obra de Platão. (shrink)